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September Weather in Cape Charles, United States

Last updated: June 24, 2025

In September, the average temperature in Cape Charles, United States is a delightful 24°C (75°F), with lows dipping to 17°C (63°F) and highs reaching up to 30°C (86°F). However, be prepared for some precipitation, as you can expect about 117 mm (4.6 in) over 10 days. With an average humidity of 78%, the air carries a warm, tropical feel, making it a perfect time to explore!

September Temperature in Cape Charles

In September in Cape Charles, the average temperature is 24°C (75°F). Maximums can reach 30°C (86°F) and minimums can be as low as 17°C (63°F). This pleasant climate makes it an ideal time for outdoor activities and exploration.

September Weather in Cape Charles: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cape Charles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cape Charles, September typically has an average temperature of 24°C (75°F), with highs reaching up to 30°C (86°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec414347566574797975675447
Data source: Temperature data for Cape Charles generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Cape Charles

In Cape Charles in September, the total precipitation amount is 117 mm (4.6 in) recorded over a span of 10 days.

September Precipitation Trends in Cape Charles

The chart displays monthly precipitation patterns in Cape Charles, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Cape Charles, September typically receives around 117 mm (4.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec100120889090801211221171008798
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cape Charles

In Cape Charles in September humidity is 78%. With an average temperature of 24°C (75°F), this humidity feels like a warm blanket wrapping around you, making travel sticky and heavy but also inviting, as long as you're prepared with plenty of water and light clothing.

September Average Humidity in Cape Charles

This chart illustrates the average monthly humidity levels in Cape Charles, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Cape Charles is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cape Charles

In Cape Charles in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cape Charles.

Maximum UV Index Levels in Cape Charles for September

The chart shows the monthly maximum UV Index (UVI) for Cape Charles in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Cape Charles typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3579101011108853
Data source: Cape Charles September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Cape Charles Compares to Other Months

Weather in Cape Charles varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cape Charles, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Cape Charles, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)100 mm (3.9 inches)84%moderate
February Weather6°C (44°F)120 mm (4.7 inches)83%moderate
March Weather8°C (47°F)88 mm (3.5 inches)82%high
April Weather13°C (56°F)90 mm (3.5 inches)81%very high
May Weather18°C (65°F)90 mm (3.5 inches)80%very high
June Weather23°C (74°F)80 mm (3.1 inches)82%very high
July Weather26°C (80°F)121 mm (4.8 inches)81%extreme
August Weather26°C (79°F)122 mm (4.8 inches)81%very high
September Weather24°C (75°F)117 mm (4.6 inches)78%very high
October Weather20°C (68°F)100 mm (3.9 inches)80%very high
November Weather12°C (55°F)86 mm (3.4 inches)84%moderate
December Weather8°C (47°F)98 mm (3.9 inches)84%moderate

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